A safety anti-collision device for highway guardrail

Abstract

The present invention provides a technical solution for a safety anti-collision device for highway guardrails, and relates to the technical field of highway traffic safety facilities. It comprises a bottom plate installed on a corrugated guardrail plate, a plurality of deformable bodies are provided at the front of the bottom plate, and a buffer energy absorption cavity is provided in the deformable body. When a vehicle collides with the deformable body, the damage to the vehicle and the driver and passengers caused by the collision can be effectively reduced because the deformable body itself has good elasticity; in addition, because the buffer energy absorption cavity on the deformable body can cause the deformable body to deform, when a violent collision occurs, the deformation of the deformable body is used to consume energy, so that the energy transmitted to the driving area is less than the bearing capacity of the driving area structure and no deformation occurs, so as to better ensure the safety of passengers and reduce injuries. It is a safety protection device installed on the existing highway guardrail plate without changing the existing guardrail structure.

Description

Technical Field

[0001] The invention relates to the technical field of highway traffic safety facilities, in particular to a safety anti-collision device for a highway guardrail. Background Art

[0002] At present, all the protective devices of highways and inter-city roads are basically corrugated steel guardrails. After installation, they can intercept and protect vehicles that may deviate from the lane and run off the highway, but the protection of the safety of vehicles and personnel and property is relatively limited. The stress and reaction force generated by the high-strength guardrail steel plate when the vehicle hits the guardrail still cause great damage to the vehicle and personnel. At the same time, after the vehicle collides with the guardrail, the rigidity of the corrugated steel material causes the vehicle to slow down less, and the probability of the vehicle rushing into the driving lane after turning back is very high, which can easily cause secondary traffic accidents and multiple serial traffic accidents. Therefore, how to significantly improve the protection level of highway guardrails for vehicles and personnel, minimize the hard damage to personnel caused by vehicle collision deformation and even personnel being thrown out and hitting the guardrail, and slow down the vehicle to keep the vehicle in the emergency lane near the guardrail as much as possible, is the technical problem that this invention needs to solve.

[0003] Previously, there have been some improvements and solutions for this kind of problem, but the practical operability is not great, there are limitations and it is not easy to promote on a large scale. There is also a rotating drum anti-collision guardrail, which can effectively improve the rigid damage caused by the collision between the rigid guardrail and the vehicle, but it is more fatal to the more numerous small and medium-sized vehicles. The rotation of the drum cannot better reduce the force generated by the inertia of the vehicle speed, causing the vehicle to change the direction of travel and deviate from the guardrail to rush into the driving lane, which is very likely to cause a secondary traffic accident.

[0004] In addition, the structural changes of the guardrail can only be installed in newly built expressways, which will cause a waste of social resources for already built expressways.

[0005] This is the shortcoming of the prior art. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a technical solution for a safety anti-collision device for highway guardrails which greatly improves the protection safety level and is simple to install, easy to upgrade and has low cost, in view of the shortcomings of the existing technology.

[0007] This solution is achieved through the following technical measures: a safety anti-collision device for highway guardrails, including a plurality of deformable bodies installed on a corrugated guardrail plate, wherein a buffer energy absorption cavity is arranged in the deformable body, and a plurality of pulling friction parts are arranged on the outer surface of the deformable body.

[0008] A further improvement of the present invention is that the shape of the deformable body is a cylinder, a semi-cylinder, a cube, a cuboid or a polygon.

[0009] A further improvement of the present invention is that the shape of the buffer energy absorption cavity is a rectangular hole, a square hole, a diamond hole, a trapezoidal hole, a polygonal hole, a circular hole, a semicircular hole or a wavy hole.

[0010] A further improvement of the present invention is that the pulling friction portion is a groove or a protrusion and / or a corrugated plate.

[0011] A further improvement of the present invention is that the deformation body is a cylindrical deformation body, the back of the cylindrical deformation body is fixedly connected to the base plate, the upper end and the lower end of the base plate are respectively provided with an upper guard plate and a lower guard plate, and the upper guard plate and the lower guard plate are arc-shaped plates and match the corrugated guardrail plate.

[0012] A further improvement of the present invention is that a support plate is provided at the rear of the base plate, the upper and lower ends of the support plate are clamped in the trough of the corrugated guardrail plate, and reinforcing plates are provided on both sides of each support plate.

[0013] A further improvement of the present invention is that a connecting groove is provided at one end of the base plate, and a connecting protrusion matching the connecting groove is provided at the other end of the base plate.

[0014] A further improvement of the present invention is that a friction belt is provided at the rear of the base plate to match the wave crests of the corrugated guardrail plate.

[0015] A further improvement of the present invention is that the bottom plate, the upper guard plate and the lower guard plate are provided with interlocking fixing slots, and cable ties are provided in the fixing slots. The cable ties are wrapped around the fixing slots and fixed to the corrugated guardrail plate.

[0016] A further improvement of the present invention is that the deformable body is a rectangular deformable body, which includes a mounting plate and an external energy absorbing plate, a group of connecting plates are provided between the mounting plate and the external energy absorbing plate, and the mounting plate, the external energy absorbing plate and the connecting plate constitute a buffer energy absorbing cavity.

[0017] The beneficial effects of the present invention can be known from the description of the above scheme, including a plurality of deformable bodies installed on the corrugated guardrail plate, wherein a buffering energy absorption cavity is arranged in the deformable body, and a plurality of pulling friction parts are arranged on the outer surface of the deformable body. When a violent collision occurs, the deformation of the deformable body can be used to consume energy, so that the energy transmitted to the driving area is less than the bearing capacity of the driving area structure without deformation, so as to better ensure the safety of passengers and reduce injuries. The material of the present invention has certain flexibility, elasticity, recovery and rigidity, and has energy absorption function, fireproof and ultraviolet protection. The external structure is provided with a structure that increases the strong friction and traction when the vehicle contacts this device, that is, the friction part, so that the vehicle as a whole can better absorb energy and buffer the deceleration when a collision occurs, and reduce the personal injury caused by the deformation of the vehicle to the driver and passengers, thereby improving the survival rate of the personnel. At the same time, it can reduce the damage caused by the collision of the life body to the rigid guardrail, such as the life body thrown out in the car accident, when the collision hits this device, such as touching the airbag, so that the personnel are well protected. In addition, this device can be widely used on new and old guardrails. It has the advantages of simple installation, convenient construction, strong practicality, and can greatly protect the lives and property of all vehicles and personnel.

[0018] It can be seen that compared with the prior art, the present invention has substantial characteristics and progress, and the beneficial effects of its implementation are also obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a three-dimensional diagram of the first embodiment.

[0021] Figure 2 It is a three-dimensional diagram of the first embodiment from another direction.

[0022] Figure 3 It is a schematic diagram of the top structure of the first embodiment.

[0023] Figure 4 It is a rear view structural schematic diagram of embodiment 1.

[0024] Figure 5 It is a left-side structural schematic diagram of the first embodiment.

[0025] Figure 6 Schematic diagram of the structure of the cable tie of the first embodiment.

[0026] Figure 7 It is a schematic diagram of the top structure of the second embodiment.

[0027] Figure 8 It is a three-dimensional diagram of embodiment 3.

[0028] Fig. 9 for Figure 8 Enlarged view of part A.

[0029] Fig.10 It is a structural diagram of embodiment 4.

[0030] In the figure, 1 is an upper guard plate, 2 is a fixed slot, 3 is a deformable body, 4 is a buffer energy absorption cavity, 5 is a bottom plate, 6 is a connecting groove, 7 is a friction belt, 8 is a support plate, 9 is a reinforcing plate, 10 is a connecting protrusion, 11 is a lower guard plate, 12 is a pulling friction part, 13 is a cable tie, 14 is a bolt, 15 is a bolt, 16 is a column, 17 is a corrugated guardrail plate, 18 is a mounting plate, 19 is a connecting plate, 20 is an external energy absorption plate, 21 is a corrugated plate, 22 is a groove, and 23 is a guard plate. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0032] The key terms appearing in the present invention are explained below.

[0033] Deformable body: refers to a component that can undergo elastic deformation under the action of external force;

[0034] The crest of the corrugated guardrail plate refers to the highest point of the corrugated guardrail plate 17 protruding outward;

[0035] The trough of the corrugated guardrail plate refers to the lowest point of the corrugated guardrail plate 17 that is concave inwardly.

[0036] Embodiment 1:

[0037] A safety anti-collision device for highway guardrails includes a plurality of deformable bodies 3 installed on a corrugated guardrail plate, wherein a buffer energy absorption cavity 4 is arranged inside the deformable body 3. In the present invention, the deformable body 3 is made of materials such as PVC plastic, rubber or polyurethane high-density foam. When a vehicle collides with the deformable body 3, the deformable body 3 itself has good elasticity, which can effectively reduce the damage to the vehicle and the driver and passengers caused by the collision. In addition, since the buffer energy absorption cavity 4 on the deformable body 3 can cause the deformable body 3 to deform, when a violent collision occurs, the deformation of the deformable body 3 is used to consume energy, so that the energy transmitted to the driving area is less than the bearing capacity of the driving area structure without deformation, so as to better ensure the safety of passengers and reduce injuries. In this embodiment, the deformable body 3 is a semi-cylinder, which can be arranged side by side longitudinally or horizontally; the buffer energy absorption cavity 4 is a circular hole.

[0038] In order to reduce the speed of the vehicle after the collision with the corrugated guardrail plate 17, the present invention provides a plurality of pulling friction parts on the outer surface of the deformation body 3, and the pulling friction parts are grooves or protrusions or corrugated plates. This improvement greatly reduces the probability of the vehicle rushing into the pedestrian lane after turning back, and avoids secondary traffic accidents and multiple chain traffic accidents. The grooves or protrusions can be dot-shaped or strip-shaped, and their shapes can be arc-shaped, triangular, trapezoidal, etc.

[0039] In order to avoid secondary injuries caused by people hitting the corrugated guardrail after an accident, and damage caused by objects being thrown out, the present invention is provided with an upper guard plate 1 and a lower guard plate 11 at the upper and lower ends of the bottom plate 5, respectively. The upper guard plate 1 and the lower guard plate 11 are arc-shaped plates and match the corrugated guardrail 17; in order to achieve the connection between the entire device and the corrugated guardrail 17, intersecting fixed card slots 2 are provided on the bottom plate 5, the upper guard plate 1 and the lower guard plate 11, and a cable tie 13 is provided in the fixed card slot 2. The cable tie 13 surrounds the fixed card slot 2 and is fixed to the corrugated guardrail 17. First, the upper guard plate 1 and the lower guard plate 11 are placed at the upper and lower ends of the corrugated guardrail 17, and then the cable tie 13 is surrounded by the entire fixed card slot 2 and fixed with bolts 14 at the opening of the cable tie 13 on the back of the corrugated guardrail 17. Bolts 15 are also used in the middle of the cable tie 13 to fix it to the entire device.

[0040] Furthermore, in order to support the entire device, a support plate 8 is provided at the rear of the base plate 5, and the upper and lower ends of the support plate 8 are stuck in the trough of the corrugated guardrail plate 17, and reinforcing plates 9 are provided on both sides of each support plate 8.

[0041] Furthermore, in order to achieve reliable fixation of the entire device, a friction belt 7 is provided at the rear of the base plate 5 to match the wave crest of the corrugated guardrail plate 17 .

[0042] In order to realize reliable connection between two adjacent devices, one end of the bottom plate 5 is provided with a connection groove 6, and the other end of the bottom plate 5 is provided with a connection protrusion 10 matching the connection groove 6. Both the connection groove 6 and the connection protrusion 10 can be semicircular, triangular, square or trapezoidal.

[0043] The present invention can be integrally formed or made in parts and then installed together. The material can be PVC plastic, rubber or polyurethane high-density foam, or a composite material of PVC plastic, rubber or polyurethane high-density foam, so that the whole device has a certain buffering and energy absorption effect, and also has sufficient strength to cope with the impact of vehicles. The present invention is highly practical, easy to install and replace, and can be widely used in guardrails of new and old highways, highway guardrails of ordinary national highways, and highway guardrails of rural roads, etc., and has a wide range of uses.

[0044] Embodiment 2:

[0045] Different from the first embodiment, the cross-section of the pulling friction portion 12 is an arc shape.

[0046] Embodiment three:

[0047] Different from the first embodiment, the deformable body 3 is a rectangular deformable body, which includes a mounting plate 18 and an outer energy absorbing plate 20, a group of connecting plates 19 are arranged between the mounting plate 18 and the outer energy absorbing plate 20, and the mounting plate 18, the outer energy absorbing plate 20 and the connecting plate 19 constitute a buffer energy absorbing cavity 4, which is in the shape of a rectangular hole. When a vehicle collides with the rectangular deformable body 3, the vehicle first contacts the outer energy absorbing plate 20, and due to the existence of the buffer energy absorbing cavity 4, the outer energy absorbing plate 20 is twisted and deformed, thereby consuming part of the energy.

[0048] The pulling friction part is a combination of a corrugated plate 21 and a groove 22. Both the corrugated plate 21 and the groove 22 play a role of friction buffering for the accident vehicle, reducing the speed of the accident vehicle and avoiding the occurrence of secondary injuries. The two are preferably arranged alternately, in which case the friction buffering performance is the best. The cross-sectional shape of the groove 22 is an arc, and other shapes such as a triangle, a trapezoid, and a square can also be used.

[0049] In order to realize reliable connection between two adjacent rectangular deformable bodies, a connecting groove is provided at one end of the rectangular deformable body, and a connecting protrusion matching the connecting groove is provided at the other end of the rectangular deformable body.

[0050] In order to achieve reliable fixation between the rectangular deformation body and the corrugated guardrail plate 17 , the cable tie is passed through the buffer energy absorption cavity 4 and then fixed on the back of the corrugated guardrail plate 17 .

[0051] Embodiment 4:

[0052] What is different from the third embodiment is that guard plates 23 are respectively provided at both ends of the inner side of the mounting plate 18, and the guard plates 23 are fixedly connected to the corrugated guardrail plate 17. The shape of the guard plates 23 matches the shape of the corrugated guardrail plate 17, thereby avoiding secondary injuries caused by people colliding with the corrugated guardrail plate after an accident, and damage caused by objects being thrown out.

[0053] Although the present invention has been described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, and all of these shall be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A safety anti-collision device for a highway guardrail, characterized by: The invention comprises a plurality of deformable bodies installed on the corrugated guardrail plate, wherein a buffer energy absorption cavity is arranged in the deformable body, and a plurality of pulling friction parts are arranged on the outer surface of the deformable body; the deformable body is a cylindrical deformable body, and the back of the cylindrical deformable body is fixedly connected to the base plate, and the upper end and the lower end of the base plate are respectively provided with an upper guard plate and a lower guard plate, and the upper guard plate and the lower guard plate are arc-shaped plates and match the corrugated guardrail plate; a support plate is arranged at the rear of the base plate, and the upper and lower ends of the support plate are stuck in the trough of the corrugated guardrail plate, and reinforcing plates are arranged on both sides of each support plate; a connecting groove is arranged at one end of the base plate, and a connecting protrusion matching the connecting groove is arranged at the other end of the base plate; a friction belt is arranged at the rear of the base plate to match the wave crest of the corrugated guardrail plate; the base plate, the upper guard plate and the lower guard plate are provided with interlocking fixed card slots, and a cable tie is arranged in the fixed card slot, and the cable tie is fixed on the corrugated guardrail plate after wrapping around the fixed card slot.

2. The safety anti-collision device for highway guardrail according to claim 1 is characterized in that: The shape of the deformable body is a cylinder, a semi-cylinder, a cube, a cuboid or a polygon.

3. The safety anti-collision device for highway guardrail according to claim 2 is characterized in that: The shape of the buffer energy absorption cavity is a square hole, a diamond hole, a trapezoidal hole, a polygonal hole, a circular hole, a semicircular hole or a wavy hole.

4. The safety anti-collision device for highway guardrail according to claim 3 is characterized in that: The pulling friction part is a groove or a protrusion and / or a corrugated plate.

5. The safety anti-collision device for highway guardrail according to any one of claims 1 to 4 is characterized in that: The deformable body is a rectangular deformable body, which includes a mounting plate and an outer energy absorbing plate. A group of connecting plates are arranged between the mounting plate and the outer energy absorbing plate. The mounting plate, the outer energy absorbing plate and the connecting plates constitute a buffer energy absorbing cavity.

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